(19)

(11)

EP 0 493 431 A1

(12)

(43) Date of publication: 08.07.1992 Bulletin 1992/28 (21) Application number: 90913728.0 (22) Date of filing: 07.09.1990

(51) International Patent Classification (IPC):  B25B 25/ 00( . ) F16G 11/ 12( . ) (86) International application number: PCT/GB1990/001381 (87) International publication number: WO 1991/004137 (04.04.1991 Gazette 1991/08)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 21.09.1989 GB 19890021354 (71) Applicant: GRIPPLE LIMITED Sheffield S12 2DB (GB)	(72) Inventors: SHAWCROSS, Brian, Edward Cheadle Hulme Cheshire SK8 7EH (GB) ORAM, David, Kenneth Nr. Nuneaton Warks CV13 6AE (GB) CROMPTON, Simon, Henry Warwick CV34 4AB (GB) (74) Representative: Hulse, Thomas Arnold, et al  Hulse & Co. Eagle Star House, Carver Street Sheffield S1 4FP Sheffield S1 4FP (GB)